{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "4336a3cc-17a4-468c-8669-e759f6c78611",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "+infinity\n",
      "1.87562750485820e-6\n",
      "1.28216723964916e-6\n",
      "1.09411604450062e-6\n",
      "1.00521911588494e-6\n",
      "9.54864911564175e-7\n",
      "9.23160412547396e-7\n",
      "9.01743992720289e-7\n",
      "8.86527062843134e-7\n",
      "8.75292835600494e-7\n",
      "8.66745054002833e-7\n",
      "8.60080526960378e-7\n",
      "8.54778159766107e-7\n",
      "8.50486965765662e-7\n",
      "8.46963045162531e-7\n",
      "8.44032377186190e-7\n",
      "8.41567951842449e-7\n",
      "8.39475225959553e-7\n",
      "8.37682596570785e-7\n",
      "8.36134998218366e-7\n",
      "8.34789501260807e-7\n",
      "8.33612224381423e-7\n",
      "8.32576129642312e-7\n",
      "8.31659422131653e-7\n",
      "8.30844371292656e-7\n",
      "8.30116431182404e-7\n",
      "8.29463575803803e-7\n",
      "8.28875791288346e-7\n",
      "8.28344683901071e-7\n",
      "8.27863174558102e-7\n",
      "8.27425258653592e-7\n",
      "8.27025815677450e-7\n",
      "8.26660457142222e-7\n",
      "8.26325404238228e-7\n",
      "8.26017388743389e-7\n",
      "8.25733572260744e-7\n",
      "8.25471480002698e-7\n",
      "8.25228946197826e-7\n",
      "8.25004068842197e-7\n",
      "8.24795172008158e-7\n",
      "8.24600774299582e-7\n",
      "8.24419562332588e-7\n",
      "8.24250368345889e-7\n",
      "8.24092151220920e-7\n",
      "8.23943980330181e-7\n",
      "8.23805021741641e-7\n",
      "8.23674526394016e-7\n",
      "8.23551819927201e-7\n",
      "8.23436293908017e-7\n",
      "8.23327398236457e-7\n",
      "8.23224634554170e-7\n",
      "8.23127550506656e-7\n",
      "8.23035734735005e-7\n",
      "8.22948812492949e-7\n",
      "8.22866441801506e-7\n",
      "8.22788310067081e-7\n",
      "8.22714131100226e-7\n",
      "8.22643642481667e-7\n",
      "8.22576603230091e-7\n",
      "8.22512791732798e-7\n",
      "8.22452003905862e-7\n",
      "8.22394051555149e-7\n",
      "8.22338760913503e-7\n",
      "8.22285971332762e-7\n",
      "8.22235534112155e-7\n",
      "8.22187311447051e-7\n",
      "8.22141175484129e-7\n",
      "8.22097007470817e-7\n",
      "8.22054696988416e-7\n",
      "8.22014141259594e-7\n",
      "8.21975244522151e-7\n",
      "8.21937917461868e-7\n",
      "8.21902076698180e-7\n",
      "8.21867644317093e-7\n",
      "8.21834547446473e-7\n",
      "8.21802717869352e-7\n",
      "8.21772091671416e-7\n",
      "8.21742608919256e-7\n",
      "8.21714213366363e-7\n",
      "8.21686852184157e-7\n",
      "8.21660475715634e-7\n",
      "8.21635037249506e-7\n",
      "8.21610492812877e-7\n",
      "8.21586800980767e-7\n",
      "8.21563922700910e-7\n",
      "8.21541821132461e-7\n",
      "8.21520461497351e-7\n",
      "8.21499810943177e-7\n",
      "8.21479838416611e-7\n",
      "8.21460514546412e-7\n",
      "8.21441811535229e-7\n",
      "8.21423703059430e-7\n",
      "8.21406164176303e-7\n",
      "8.21389171238000e-7\n",
      "8.21372701811674e-7\n",
      "8.21356734605310e-7\n",
      "8.21341249398786e-7\n",
      "8.21326226979745e-7\n",
      "8.21311649083899e-7\n",
      "8.21297498339424e-7\n",
      "8.21283758215121e-7\n",
      "8.21270412972056e-7\n",
      "8.21257447618417e-7\n",
      "8.21244847867347e-7\n",
      "8.21232600097524e-7\n",
      "8.21220691316293e-7\n",
      "8.21209109125158e-7\n",
      "8.21197841687462e-7\n",
      "8.21186877698106e-7\n",
      "8.21176206355150e-7\n",
      "8.21165817333173e-7\n",
      "8.21155700758260e-7\n",
      "8.21145847184511e-7\n",
      "8.21136247571966e-7\n",
      "8.21126893265842e-7\n",
      "8.21117775976999e-7\n",
      "8.21108887763562e-7\n",
      "8.21100221013596e-7\n",
      "8.21091768428797e-7\n",
      "8.21083523009102e-7\n",
      "8.21075478038186e-7\n",
      "8.21067627069768e-7\n",
      "8.21059963914678e-7\n",
      "8.21052482628654e-7\n",
      "8.21045177500797e-7\n",
      "8.21038043042662e-7\n",
      "8.21031073977939e-7\n",
      "8.21024265232687e-7\n",
      "8.21017611926091e-7\n",
      "8.21011109361703e-7\n",
      "8.21004753019149e-7\n",
      "8.20998538546265e-7\n",
      "8.20992461751637e-7\n",
      "8.20986518597531e-7\n",
      "8.20980705193180e-7\n",
      "8.20975017788406e-7\n",
      "8.20969452767570e-7\n",
      "8.20964006643820e-7\n",
      "8.20958676053622e-7\n",
      "8.20953457751567e-7\n",
      "8.20948348605423e-7\n",
      "8.20943345591431e-7\n",
      "8.20938445789832e-7\n",
      "8.20933646380596e-7\n",
      "8.20928944639369e-7\n",
      "8.20924337933599e-7\n",
      "8.20919823718847e-7\n"
     ]
    }
   ],
   "source": [
    "#6.8\n",
    "RH=1.0967758e7\n",
    "for n in range(3,150):\n",
    "    v=RH*(1/9-1/(n^2))\n",
    "    print(1/v)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "b4f1578a-e6a0-42df-8b3b-ae4a4103eb12",
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "c4a3de7b-18ad-4609-a14e-54ed9188f1a5",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "2.53546418063804"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "const.h*const.c/489e-9 /const.e"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "63836aff-d861-4e85-a16b-f52c5b274f86",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'Wien displacement law constant': (0.0028977685, 'm K', 5.1e-09),\n",
       " 'atomic unit of 1st hyperpolarizablity': (3.20636151e-53,\n",
       "  'C^3 m^3 J^-2',\n",
       "  2.8e-60),\n",
       " 'atomic unit of 2nd hyperpolarizablity': (6.2353808e-65,\n",
       "  'C^4 m^4 J^-3',\n",
       "  1.1e-71),\n",
       " 'atomic unit of electric dipole moment': (8.47835309e-30, 'C m', 7.3e-37),\n",
       " 'atomic unit of electric polarizablity': (1.648777274e-41,\n",
       "  'C^2 m^2 J^-1',\n",
       "  1.6e-49),\n",
       " 'atomic unit of electric quadrupole moment': (4.48655124e-40,\n",
       "  'C m^2',\n",
       "  3.9e-47),\n",
       " 'atomic unit of magn. dipole moment': (1.8548019e-23, 'J T^-1', 1.6e-30),\n",
       " 'atomic unit of magn. flux density': (235051.756758, 'T', 7.1e-05),\n",
       " 'deuteron magn. moment': (4.33073482e-27, 'J T^-1', 3.8e-34),\n",
       " 'deuteron magn. moment to Bohr magneton ratio': (0.0004669754567, '', 5e-12),\n",
       " 'deuteron magn. moment to nuclear magneton ratio': (0.8574382329,\n",
       "  '',\n",
       "  9.2e-09),\n",
       " 'deuteron-electron magn. moment ratio': (-0.0004664345548, '', 5e-12),\n",
       " 'deuteron-proton magn. moment ratio': (0.3070122084, '', 4.5e-09),\n",
       " 'deuteron-neutron magn. moment ratio': (-0.44820652, '', 1.1e-07),\n",
       " 'electron gyromagn. ratio': (176085963023.0, 's^-1 T^-1', 53.0),\n",
       " 'electron gyromagn. ratio over 2 pi': (28024.9532, 'MHz T^-1', 0.0024),\n",
       " 'electron magn. moment': (-9.28476412e-24, 'J T^-1', 8e-31),\n",
       " 'electron magn. moment to Bohr magneton ratio': (-1.0011596521859,\n",
       "  '',\n",
       "  3.8e-12),\n",
       " 'electron magn. moment to nuclear magneton ratio': (-1838.28197107,\n",
       "  '',\n",
       "  8.5e-07),\n",
       " 'electron magn. moment anomaly': (0.0011596521859, '', 3.8e-12),\n",
       " 'electron to shielded proton magn. moment ratio': (-658.2275956, '', 7.1e-06),\n",
       " 'electron to shielded helion magn. moment ratio': (864.058255, '', 1e-05),\n",
       " 'electron-deuteron magn. moment ratio': (-2143.923493, '', 2.3e-05),\n",
       " 'electron-muon magn. moment ratio': (206.7669894, '', 5.4e-06),\n",
       " 'electron-neutron magn. moment ratio': (960.9205, '', 0.00023),\n",
       " 'electron-proton magn. moment ratio': (-658.2106862, '', 6.6e-06),\n",
       " 'magn. constant': (1.2566370614e-06, 'N A^-2', 0.0),\n",
       " 'magn. flux quantum': (2.067833848e-15, 'Wb', 0.0),\n",
       " 'muon magn. moment': (-4.49044799e-26, 'J T^-1', 4e-33),\n",
       " 'muon magn. moment to Bohr magneton ratio': (-0.00484197045, '', 1.3e-10),\n",
       " 'muon magn. moment to nuclear magneton ratio': (-8.89059698, '', 2.3e-07),\n",
       " 'muon-proton magn. moment ratio': (-3.183345118, '', 8.9e-08),\n",
       " 'neutron gyromagn. ratio': (183247171.0, 's^-1 T^-1', 43.0),\n",
       " 'neutron gyromagn. ratio over 2 pi': (29.164695, 'MHz T^-1', 7.3e-06),\n",
       " 'neutron magn. moment': (-9.6623645e-27, 'J T^-1', 2.4e-33),\n",
       " 'neutron magn. moment to Bohr magneton ratio': (-0.00104187563, '', 2.5e-10),\n",
       " 'neutron magn. moment to nuclear magneton ratio': (-1.91304273, '', 4.5e-07),\n",
       " 'neutron to shielded proton magn. moment ratio': (-0.68499694, '', 1.6e-07),\n",
       " 'neutron-electron magn. moment ratio': (0.00104066882, '', 2.5e-10),\n",
       " 'neutron-proton magn. moment ratio': (-0.68497934, '', 1.6e-07),\n",
       " 'proton gyromagn. ratio': (267522187.44, 's^-1 T^-1', 0.11),\n",
       " 'proton gyromagn. ratio over 2 pi': (42.5774813, 'MHz T^-1', 3.7e-06),\n",
       " 'proton magn. moment': (1.41060671e-26, 'J T^-1', 1.2e-33),\n",
       " 'proton magn. moment to Bohr magneton ratio': (0.001521032206, '', 1.5e-11),\n",
       " 'proton magn. moment to nuclear magneton ratio': (2.792847351, '', 2.8e-08),\n",
       " 'proton magn. shielding correction': (2.5689e-05, '', 1.1e-08),\n",
       " 'proton-neutron magn. moment ratio': (-1.45989805, '', 3.4e-07),\n",
       " 'shielded helion gyromagn. ratio': (203789456.9, 's^-1 T^-1', 2.4),\n",
       " 'shielded helion gyromagn. ratio over 2 pi': (32.4341015,\n",
       "  'MHz T^-1',\n",
       "  2.8e-06),\n",
       " 'shielded helion magn. moment': (-1.074553024e-26, 'J T^-1', 9.3e-34),\n",
       " 'shielded helion magn. moment to Bohr magneton ratio': (-0.001158671474,\n",
       "  '',\n",
       "  1.4e-11),\n",
       " 'shielded helion magn. moment to nuclear magneton ratio': (-2.127497723,\n",
       "  '',\n",
       "  2.5e-08),\n",
       " 'shielded helion to proton magn. moment ratio': (-0.761766562, '', 1.2e-08),\n",
       " 'shielded helion to shielded proton magn. moment ratio': (-0.7617861313,\n",
       "  '',\n",
       "  3.3e-09),\n",
       " 'shielded proton magn. moment': (1.41057047e-26, 'J T^-1', 1.2e-33),\n",
       " 'shielded proton magn. moment to Bohr magneton ratio': (0.001520993132,\n",
       "  '',\n",
       "  1.6e-11),\n",
       " 'shielded proton magn. moment to nuclear magneton ratio': (2.792775604,\n",
       "  '',\n",
       "  3e-08),\n",
       " '{220} lattice spacing of silicon': (1.920155714e-10, 'm', 3.2e-18),\n",
       " 'lattice spacing of silicon': (1.920155762e-10, 'm', 5e-18),\n",
       " 'alpha particle-electron mass ratio': (7294.29954142, '', 2.4e-07),\n",
       " 'alpha particle mass': (6.6446573357e-27, 'kg', 2e-36),\n",
       " 'alpha particle mass energy equivalent': (5.9719201914e-10, 'J', 1.8e-19),\n",
       " 'alpha particle mass energy equivalent in MeV': (3727.3794066,\n",
       "  'MeV',\n",
       "  1.1e-06),\n",
       " 'alpha particle mass in u': (4.001506179127, 'u', 6.3e-11),\n",
       " 'alpha particle molar mass': (0.0040015061777, 'kg mol^-1', 1.2e-12),\n",
       " 'alpha particle-proton mass ratio': (3.97259969009, '', 2.2e-10),\n",
       " 'Angstrom star': (1.00001495e-10, 'm', 9e-17),\n",
       " 'atomic mass constant': (1.6605390666e-27, 'kg', 5e-37),\n",
       " 'atomic mass constant energy equivalent': (1.4924180856e-10, 'J', 4.5e-20),\n",
       " 'atomic mass constant energy equivalent in MeV': (931.49410242,\n",
       "  'MeV',\n",
       "  2.8e-07),\n",
       " 'atomic mass unit-electron volt relationship': (931494102.42, 'eV', 0.28),\n",
       " 'atomic mass unit-hartree relationship': (34231776.874, 'E_h', 0.01),\n",
       " 'atomic mass unit-hertz relationship': (2.25234271871e+23,\n",
       "  'Hz',\n",
       "  68000000000000.0),\n",
       " 'atomic mass unit-inverse meter relationship': (751300661040000.0,\n",
       "  'm^-1',\n",
       "  230000.0),\n",
       " 'atomic mass unit-joule relationship': (1.4924180856e-10, 'J', 4.5e-20),\n",
       " 'atomic mass unit-kelvin relationship': (10809540191600.0, 'K', 3300.0),\n",
       " 'atomic mass unit-kilogram relationship': (1.6605390666e-27, 'kg', 5e-37),\n",
       " 'atomic unit of 1st hyperpolarizability': (3.2063613061e-53,\n",
       "  'C^3 m^3 J^-2',\n",
       "  1.5e-62),\n",
       " 'atomic unit of 2nd hyperpolarizability': (6.2353799905e-65,\n",
       "  'C^4 m^4 J^-3',\n",
       "  3.8e-74),\n",
       " 'atomic unit of action': (1.054571817e-34, 'J s', 0.0),\n",
       " 'atomic unit of charge': (1.602176634e-19, 'C', 0.0),\n",
       " 'atomic unit of charge density': (1081202384570.0, 'C m^-3', 490.0),\n",
       " 'atomic unit of current': (0.00662361823751, 'A', 1.3e-14),\n",
       " 'atomic unit of electric dipole mom.': (8.4783536255e-30, 'C m', 1.3e-39),\n",
       " 'atomic unit of electric field': (514220674763.0, 'V m^-1', 78.0),\n",
       " 'atomic unit of electric field gradient': (9.7173624292e+21,\n",
       "  'V m^-2',\n",
       "  2900000000000.0),\n",
       " 'atomic unit of electric polarizability': (1.64877727436e-41,\n",
       "  'C^2 m^2 J^-1',\n",
       "  5e-51),\n",
       " 'atomic unit of electric potential': (27.211386245988, 'V', 5.3e-11),\n",
       " 'atomic unit of electric quadrupole mom.': (4.4865515246e-40,\n",
       "  'C m^2',\n",
       "  1.4e-49),\n",
       " 'atomic unit of energy': (4.3597447222071e-18, 'J', 8.5e-30),\n",
       " 'atomic unit of force': (8.2387234983e-08, 'N', 1.2e-17),\n",
       " 'atomic unit of length': (5.29177210903e-11, 'm', 8e-21),\n",
       " 'atomic unit of mag. dipole mom.': (1.85480201566e-23, 'J T^-1', 5.6e-33),\n",
       " 'atomic unit of mag. flux density': (235051.756758, 'T', 7.1e-05),\n",
       " 'atomic unit of magnetizability': (7.8910366008e-29, 'J T^-2', 4.8e-38),\n",
       " 'atomic unit of mass': (9.1093837015e-31, 'kg', 2.8e-40),\n",
       " 'atomic unit of momentum': (1.9928519141e-24, 'kg m s^-1', 3e-34),\n",
       " 'atomic unit of permittivity': (1.11265005545e-10, 'F m^-1', 1.7e-20),\n",
       " 'atomic unit of time': (2.4188843265857e-17, 's', 4.7e-29),\n",
       " 'atomic unit of velocity': (2187691.26364, 'm s^-1', 0.00033),\n",
       " 'Avogadro constant': (6.02214076e+23, 'mol^-1', 0.0),\n",
       " 'Bohr magneton': (9.2740100783e-24, 'J T^-1', 2.8e-33),\n",
       " 'Bohr magneton in eV/T': (5.788381806e-05, 'eV T^-1', 1.7e-14),\n",
       " 'Bohr magneton in Hz/T': (13996244936.1, 'Hz T^-1', 4.2),\n",
       " 'Bohr magneton in inverse meters per tesla': (46.68644814,\n",
       "  'm^-1 T^-1',\n",
       "  2.9e-07),\n",
       " 'Bohr magneton in K/T': (0.67171381563, 'K T^-1', 2e-10),\n",
       " 'Bohr radius': (5.29177210903e-11, 'm', 8e-21),\n",
       " 'Boltzmann constant': (1.380649e-23, 'J K^-1', 0.0),\n",
       " 'Boltzmann constant in eV/K': (8.617333262e-05, 'eV K^-1', 0.0),\n",
       " 'Boltzmann constant in Hz/K': (20836619120.0, 'Hz K^-1', 0.0),\n",
       " 'Boltzmann constant in inverse meters per kelvin': (69.503457,\n",
       "  'm^-1 K^-1',\n",
       "  4e-05),\n",
       " 'characteristic impedance of vacuum': (376.730313668, 'ohm', 5.7e-08),\n",
       " 'classical electron radius': (2.8179403262e-15, 'm', 1.3e-24),\n",
       " 'Compton wavelength': (2.42631023867e-12, 'm', 7.3e-22),\n",
       " 'Compton wavelength over 2 pi': (3.8615926764e-13, 'm', 1.8e-22),\n",
       " 'conductance quantum': (7.748091729e-05, 'S', 0.0),\n",
       " 'conventional value of Josephson constant': (483597900000000.0,\n",
       "  'Hz V^-1',\n",
       "  0.0),\n",
       " 'conventional value of von Klitzing constant': (25812.807, 'ohm', 0.0),\n",
       " 'Cu x unit': (1.00207697e-13, 'm', 2.8e-20),\n",
       " 'deuteron-electron mag. mom. ratio': (-0.0004664345551, '', 1.2e-12),\n",
       " 'deuteron-electron mass ratio': (3670.48296788, '', 1.3e-07),\n",
       " 'deuteron g factor': (0.8574382338, '', 2.2e-09),\n",
       " 'deuteron mag. mom.': (4.330735094e-27, 'J T^-1', 1.1e-35),\n",
       " 'deuteron mag. mom. to Bohr magneton ratio': (0.000466975457, '', 1.2e-12),\n",
       " 'deuteron mag. mom. to nuclear magneton ratio': (0.8574382338, '', 2.2e-09),\n",
       " 'deuteron mass': (3.3435837724e-27, 'kg', 1e-36),\n",
       " 'deuteron mass energy equivalent': (3.00506323102e-10, 'J', 9.1e-20),\n",
       " 'deuteron mass energy equivalent in MeV': (1875.61294257, 'MeV', 5.7e-07),\n",
       " 'deuteron mass in u': (2.013553212745, 'u', 4e-11),\n",
       " 'deuteron molar mass': (0.00201355321205, 'kg mol^-1', 6.1e-13),\n",
       " 'deuteron-neutron mag. mom. ratio': (-0.44820653, '', 1.1e-07),\n",
       " 'deuteron-proton mag. mom. ratio': (0.30701220939, '', 7.9e-10),\n",
       " 'deuteron-proton mass ratio': (1.99900750139, '', 1.1e-10),\n",
       " 'deuteron rms charge radius': (2.12799e-15, 'm', 7.4e-19),\n",
       " 'electric constant': (8.8541878128e-12, 'F m^-1', 1.3e-21),\n",
       " 'electron charge to mass quotient': (-175882001076.0, 'C kg^-1', 53.0),\n",
       " 'electron-deuteron mag. mom. ratio': (-2143.9234915, '', 5.6e-06),\n",
       " 'electron-deuteron mass ratio': (0.0002724437107462, '', 9.6e-15),\n",
       " 'electron g factor': (-2.00231930436256, '', 3.5e-13),\n",
       " 'electron gyromag. ratio': (176085963023.0, 's^-1 T^-1', 53.0),\n",
       " 'electron gyromag. ratio over 2 pi': (28024.95164, 'MHz T^-1', 0.00017),\n",
       " 'electron mag. mom.': (-9.2847647043e-24, 'J T^-1', 2.8e-33),\n",
       " 'electron mag. mom. anomaly': (0.00115965218128, '', 1.8e-13),\n",
       " 'electron mag. mom. to Bohr magneton ratio': (-1.00115965218128, '', 1.8e-13),\n",
       " 'electron mag. mom. to nuclear magneton ratio': (-1838.28197188, '', 1.1e-07),\n",
       " 'electron mass': (9.1093837015e-31, 'kg', 2.8e-40),\n",
       " 'electron mass energy equivalent': (8.1871057769e-14, 'J', 2.5e-23),\n",
       " 'electron mass energy equivalent in MeV': (0.51099895, 'MeV', 1.5e-10),\n",
       " 'electron mass in u': (0.000548579909065, 'u', 1.6e-14),\n",
       " 'electron molar mass': (5.4857990888e-07, 'kg mol^-1', 1.7e-16),\n",
       " 'electron-muon mag. mom. ratio': (206.7669883, '', 4.6e-06),\n",
       " 'electron-muon mass ratio': (0.00483633169, '', 1.1e-10),\n",
       " 'electron-neutron mag. mom. ratio': (960.9205, '', 0.00023),\n",
       " 'electron-neutron mass ratio': (0.00054386734424, '', 2.6e-13),\n",
       " 'electron-proton mag. mom. ratio': (-658.21068789, '', 2e-07),\n",
       " 'electron-proton mass ratio': (0.000544617021487, '', 3.3e-14),\n",
       " 'electron-tau mass ratio': (0.000287585, '', 1.9e-08),\n",
       " 'electron to alpha particle mass ratio': (0.0001370933554787, '', 4.5e-15),\n",
       " 'electron to shielded helion mag. mom. ratio': (864.058257, '', 1e-05),\n",
       " 'electron to shielded proton mag. mom. ratio': (-658.2275971, '', 7.2e-06),\n",
       " 'electron volt': (1.602176634e-19, 'J', 0.0),\n",
       " 'electron volt-atomic mass unit relationship': (1.07354410233e-09,\n",
       "  'u',\n",
       "  3.2e-19),\n",
       " 'electron volt-hartree relationship': (0.036749322175655, 'E_h', 7.1e-14),\n",
       " 'electron volt-hertz relationship': (241798924200000.0, 'Hz', 0.0),\n",
       " 'electron volt-inverse meter relationship': (806554.3937, 'm^-1', 0.0),\n",
       " 'electron volt-joule relationship': (1.602176634e-19, 'J', 0.0),\n",
       " 'electron volt-kelvin relationship': (11604.51812, 'K', 0.0),\n",
       " 'electron volt-kilogram relationship': (1.782661921e-36, 'kg', 0.0),\n",
       " 'elementary charge': (1.602176634e-19, 'C', 0.0),\n",
       " 'elementary charge over h': (241798926200000.0, 'A J^-1', 1500000.0),\n",
       " 'Faraday constant': (96485.33212, 'C mol^-1', 0.0),\n",
       " 'Faraday constant for conventional electric current': (96485.3251,\n",
       "  'C_90 mol^-1',\n",
       "  0.0012),\n",
       " 'Fermi coupling constant': (1.1663787e-05, 'GeV^-2', 6e-12),\n",
       " 'fine-structure constant': (0.0072973525693, '', 1.1e-12),\n",
       " 'first radiation constant': (3.741771852e-16, 'W m^2', 0.0),\n",
       " 'first radiation constant for spectral radiance': (1.191042972e-16,\n",
       "  'W m^2 sr^-1',\n",
       "  0.0),\n",
       " 'hartree-atomic mass unit relationship': (2.92126232205e-08, 'u', 8.8e-18),\n",
       " 'hartree-electron volt relationship': (27.211386245988, 'eV', 5.3e-11),\n",
       " 'Hartree energy': (4.3597447222071e-18, 'J', 8.5e-30),\n",
       " 'Hartree energy in eV': (27.211386245988, 'eV', 5.3e-11),\n",
       " 'hartree-hertz relationship': (6579683920502000.0, 'Hz', 13000.0),\n",
       " 'hartree-inverse meter relationship': (21947463.13632, 'm^-1', 4.3e-05),\n",
       " 'hartree-joule relationship': (4.3597447222071e-18, 'J', 8.5e-30),\n",
       " 'hartree-kelvin relationship': (315775.02480407, 'K', 6.1e-07),\n",
       " 'hartree-kilogram relationship': (4.8508702095432e-35, 'kg', 9.4e-47),\n",
       " 'helion-electron mass ratio': (5495.88528007, '', 2.4e-07),\n",
       " 'helion mass': (5.0064127796e-27, 'kg', 1.5e-36),\n",
       " 'helion mass energy equivalent': (4.4995394125e-10, 'J', 1.4e-19),\n",
       " 'helion mass energy equivalent in MeV': (2808.39160743, 'MeV', 8.5e-07),\n",
       " 'helion mass in u': (3.014932247175, 'u', 9.7e-11),\n",
       " 'helion molar mass': (0.00301493224613, 'kg mol^-1', 9.1e-13),\n",
       " 'helion-proton mass ratio': (2.99315267167, '', 1.3e-10),\n",
       " 'hertz-atomic mass unit relationship': (4.4398216652e-24, 'u', 1.3e-33),\n",
       " 'hertz-electron volt relationship': (4.135667696e-15, 'eV', 0.0),\n",
       " 'hertz-hartree relationship': (1.519829846057e-16, 'E_h', 2.9e-28),\n",
       " 'hertz-inverse meter relationship': (3.3356409519815204e-09, 'm^-1', 0.0),\n",
       " 'hertz-joule relationship': (6.62607015e-34, 'J', 0.0),\n",
       " 'hertz-kelvin relationship': (4.799243073e-11, 'K', 0.0),\n",
       " 'hertz-kilogram relationship': (7.372497323e-51, 'kg', 0.0),\n",
       " 'inverse fine-structure constant': (137.035999084, '', 2.1e-08),\n",
       " 'inverse meter-atomic mass unit relationship': (1.3310250501e-15, 'u', 4e-25),\n",
       " 'inverse meter-electron volt relationship': (1.239841984e-06, 'eV', 0.0),\n",
       " 'inverse meter-hartree relationship': (4.556335252912e-08, 'E_h', 8.8e-20),\n",
       " 'inverse meter-hertz relationship': (299792458.0, 'Hz', 0.0),\n",
       " 'inverse meter-joule relationship': (1.986445857e-25, 'J', 0.0),\n",
       " 'inverse meter-kelvin relationship': (0.01438776877, 'K', 0.0),\n",
       " 'inverse meter-kilogram relationship': (2.210219094e-42, 'kg', 0.0),\n",
       " 'inverse of conductance quantum': (12906.40372, 'ohm', 0.0),\n",
       " 'Josephson constant': (483597848400000.0, 'Hz V^-1', 0.0),\n",
       " 'joule-atomic mass unit relationship': (6700535256.5, 'u', 2.0),\n",
       " 'joule-electron volt relationship': (6.241509074e+18, 'eV', 0.0),\n",
       " 'joule-hartree relationship': (2.2937122783963e+17, 'E_h', 450000.0),\n",
       " 'joule-hertz relationship': (1.509190179e+33, 'Hz', 0.0),\n",
       " 'joule-inverse meter relationship': (5.034116567e+24, 'm^-1', 0.0),\n",
       " 'joule-kelvin relationship': (7.242970516e+22, 'K', 0.0),\n",
       " 'joule-kilogram relationship': (1.1126500560536185e-17, 'kg', 0.0),\n",
       " 'kelvin-atomic mass unit relationship': (9.2510873014e-14, 'u', 2.8e-23),\n",
       " 'kelvin-electron volt relationship': (8.617333262e-05, 'eV', 0.0),\n",
       " 'kelvin-hartree relationship': (3.1668115634556e-06, 'E_h', 6.1e-18),\n",
       " 'kelvin-hertz relationship': (20836619120.0, 'Hz', 0.0),\n",
       " 'kelvin-inverse meter relationship': (69.50348004, 'm^-1', 0.0),\n",
       " 'kelvin-joule relationship': (1.380649e-23, 'J', 0.0),\n",
       " 'kelvin-kilogram relationship': (1.536179187e-40, 'kg', 0.0),\n",
       " 'kilogram-atomic mass unit relationship': (6.0221407621e+26, 'u', 1.8e+17),\n",
       " 'kilogram-electron volt relationship': (5.609588603e+35, 'eV', 0.0),\n",
       " 'kilogram-hartree relationship': (2.0614857887409e+34, 'E_h', 4e+22),\n",
       " 'kilogram-hertz relationship': (1.356392489e+50, 'Hz', 0.0),\n",
       " 'kilogram-inverse meter relationship': (4.524438335e+41, 'm^-1', 0.0),\n",
       " 'kilogram-joule relationship': (8.987551787368176e+16, 'J', 0.0),\n",
       " 'kilogram-kelvin relationship': (6.50965726e+39, 'K', 0.0),\n",
       " 'lattice parameter of silicon': (5.431020511e-10, 'm', 8.9e-18),\n",
       " 'Loschmidt constant (273.15 K, 101.325 kPa)': (2.686780111e+25, 'm^-3', 0.0),\n",
       " 'mag. constant': (1.25663706212e-06, 'N A^-2', 1.9e-16),\n",
       " 'mag. flux quantum': (2.067833848e-15, 'Wb', 0.0),\n",
       " 'molar gas constant': (8.314462618, 'J mol^-1 K^-1', 0.0),\n",
       " 'molar mass constant': (0.00099999999965, 'kg mol^-1', 3e-13),\n",
       " 'molar mass of carbon-12': (0.0119999999958, 'kg mol^-1', 3.6e-12),\n",
       " 'molar Planck constant': (3.990312712e-10, 'J Hz^-1 mol^-1', 0.0),\n",
       " 'molar Planck constant times c': (0.119626565582, 'J m mol^-1', 5.4e-11),\n",
       " 'molar volume of ideal gas (273.15 K, 100 kPa)': (0.02271095464,\n",
       "  'm^3 mol^-1',\n",
       "  0.0),\n",
       " 'molar volume of ideal gas (273.15 K, 101.325 kPa)': (0.02241396954,\n",
       "  'm^3 mol^-1',\n",
       "  0.0),\n",
       " 'molar volume of silicon': (1.205883199e-05, 'm^3 mol^-1', 6e-13),\n",
       " 'Mo x unit': (1.00209952e-13, 'm', 5.3e-20),\n",
       " 'muon Compton wavelength': (1.17344411e-14, 'm', 2.6e-22),\n",
       " 'muon Compton wavelength over 2 pi': (1.867594308e-15, 'm', 4.2e-23),\n",
       " 'muon-electron mass ratio': (206.768283, '', 4.6e-06),\n",
       " 'muon g factor': (-2.0023318418, '', 1.3e-09),\n",
       " 'muon mag. mom.': (-4.4904483e-26, 'J T^-1', 1e-33),\n",
       " 'muon mag. mom. anomaly': (0.00116592089, '', 6.3e-10),\n",
       " 'muon mag. mom. to Bohr magneton ratio': (-0.00484197047, '', 1.1e-10),\n",
       " 'muon mag. mom. to nuclear magneton ratio': (-8.89059703, '', 2e-07),\n",
       " 'muon mass': (1.883531627e-28, 'kg', 4.2e-36),\n",
       " 'muon mass energy equivalent': (1.692833804e-11, 'J', 3.8e-19),\n",
       " 'muon mass energy equivalent in MeV': (105.6583755, 'MeV', 2.3e-06),\n",
       " 'muon mass in u': (0.1134289259, 'u', 2.5e-09),\n",
       " 'muon molar mass': (0.0001134289259, 'kg mol^-1', 2.5e-12),\n",
       " 'muon-neutron mass ratio': (0.112454517, '', 2.5e-09),\n",
       " 'muon-proton mag. mom. ratio': (-3.183345142, '', 7.1e-08),\n",
       " 'muon-proton mass ratio': (0.1126095264, '', 2.5e-09),\n",
       " 'muon-tau mass ratio': (0.0594635, '', 4e-06),\n",
       " 'natural unit of action': (1.054571817e-34, 'J s', 0.0),\n",
       " 'natural unit of action in eV s': (6.582119569e-16, 'eV s', 0.0),\n",
       " 'natural unit of energy': (8.1871057769e-14, 'J', 2.5e-23),\n",
       " 'natural unit of energy in MeV': (0.51099895, 'MeV', 1.5e-10),\n",
       " 'natural unit of length': (3.8615926796e-13, 'm', 1.2e-22),\n",
       " 'natural unit of mass': (9.1093837015e-31, 'kg', 2.8e-40),\n",
       " 'natural unit of momentum': (2.730924488e-22, 'kg m s^-1', 3.4e-30),\n",
       " 'natural unit of momentum in MeV/c': (0.5109989461, 'MeV/c', 3.1e-09),\n",
       " 'natural unit of time': (1.28808866819e-21, 's', 3.9e-31),\n",
       " 'natural unit of velocity': (299792458.0, 'm s^-1', 0.0),\n",
       " 'neutron Compton wavelength': (1.31959090581e-15, 'm', 7.5e-25),\n",
       " 'neutron Compton wavelength over 2 pi': (2.1001941536e-16, 'm', 1.4e-25),\n",
       " 'neutron-electron mag. mom. ratio': (0.00104066882, '', 2.5e-10),\n",
       " 'neutron-electron mass ratio': (1838.68366173, '', 8.9e-07),\n",
       " 'neutron g factor': (-3.82608545, '', 9e-07),\n",
       " 'neutron gyromag. ratio': (183247171.0, 's^-1 T^-1', 43.0),\n",
       " 'neutron gyromag. ratio over 2 pi': (29.1646933, 'MHz T^-1', 6.9e-06),\n",
       " 'neutron mag. mom.': (-9.6623651e-27, 'J T^-1', 2.3e-33),\n",
       " 'neutron mag. mom. to Bohr magneton ratio': (-0.00104187563, '', 2.5e-10),\n",
       " 'neutron mag. mom. to nuclear magneton ratio': (-1.91304273, '', 4.5e-07),\n",
       " 'neutron mass': (1.67492749804e-27, 'kg', 9.5e-37),\n",
       " 'neutron mass energy equivalent': (1.50534976287e-10, 'J', 8.6e-20),\n",
       " 'neutron mass energy equivalent in MeV': (939.56542052, 'MeV', 5.4e-07),\n",
       " 'neutron mass in u': (1.00866491595, 'u', 4.9e-10),\n",
       " 'neutron molar mass': (0.0010086649156, 'kg mol^-1', 5.7e-13),\n",
       " 'neutron-muon mass ratio': (8.89248406, '', 2e-07),\n",
       " 'neutron-proton mag. mom. ratio': (-0.68497934, '', 1.6e-07),\n",
       " 'neutron-proton mass ratio': (1.00137841931, '', 4.9e-10),\n",
       " 'neutron-tau mass ratio': (0.528779, '', 3.6e-05),\n",
       " 'neutron to shielded proton mag. mom. ratio': (-0.68499694, '', 1.6e-07),\n",
       " 'Newtonian constant of gravitation': (6.6743e-11, 'm^3 kg^-1 s^-2', 1.5e-15),\n",
       " 'Newtonian constant of gravitation over h-bar c': (6.70883e-39,\n",
       "  '(GeV/c^2)^-2',\n",
       "  1.5e-43),\n",
       " 'nuclear magneton': (5.0507837461e-27, 'J T^-1', 1.5e-36),\n",
       " 'nuclear magneton in eV/T': (3.15245125844e-08, 'eV T^-1', 9.6e-18),\n",
       " 'nuclear magneton in inverse meters per tesla': (0.02542623432,\n",
       "  'm^-1 T^-1',\n",
       "  1.6e-10),\n",
       " 'nuclear magneton in K/T': (0.00036582677756, 'K T^-1', 1.1e-13),\n",
       " 'nuclear magneton in MHz/T': (7.6225932291, 'MHz T^-1', 2.3e-09),\n",
       " 'Planck constant': (6.62607015e-34, 'J Hz^-1', 0.0),\n",
       " 'Planck constant in eV s': (4.135667662e-15, 'eV s', 2.5e-23),\n",
       " 'Planck constant over 2 pi': (1.0545718e-34, 'J s', 1.3e-42),\n",
       " 'Planck constant over 2 pi in eV s': (6.582119514e-16, 'eV s', 4e-24),\n",
       " 'Planck constant over 2 pi times c in MeV fm': (197.3269788,\n",
       "  'MeV fm',\n",
       "  1.2e-06),\n",
       " 'Planck length': (1.616255e-35, 'm', 1.8e-40),\n",
       " 'Planck mass': (2.176434e-08, 'kg', 2.4e-13),\n",
       " 'Planck mass energy equivalent in GeV': (1.22089e+19,\n",
       "  'GeV',\n",
       "  140000000000000.0),\n",
       " 'Planck temperature': (1.416784e+32, 'K', 1.6e+27),\n",
       " 'Planck time': (5.391247e-44, 's', 6e-49),\n",
       " 'proton charge to mass quotient': (95788331.56, 'C kg^-1', 0.029),\n",
       " 'proton Compton wavelength': (1.32140985539e-15, 'm', 4e-25),\n",
       " 'proton Compton wavelength over 2 pi': (2.10308910109e-16, 'm', 9.7e-26),\n",
       " 'proton-electron mass ratio': (1836.15267343, '', 1.1e-07),\n",
       " 'proton g factor': (5.5856946893, '', 1.6e-09),\n",
       " 'proton gyromag. ratio': (267522187.44, 's^-1 T^-1', 0.11),\n",
       " 'proton gyromag. ratio over 2 pi': (42.57747892, 'MHz T^-1', 2.9e-07),\n",
       " 'proton mag. mom.': (1.41060679736e-26, 'J T^-1', 6e-36),\n",
       " 'proton mag. mom. to Bohr magneton ratio': (0.0015210322023, '', 4.6e-13),\n",
       " 'proton mag. mom. to nuclear magneton ratio': (2.79284734463, '', 8.2e-10),\n",
       " 'proton mag. shielding correction': (2.5689e-05, '', 1.1e-08),\n",
       " 'proton mass': (1.67262192369e-27, 'kg', 5.1e-37),\n",
       " 'proton mass energy equivalent': (1.50327761598e-10, 'J', 4.6e-20),\n",
       " 'proton mass energy equivalent in MeV': (938.27208816, 'MeV', 2.9e-07),\n",
       " 'proton mass in u': (1.007276466621, 'u', 5.3e-11),\n",
       " 'proton molar mass': (0.00100727646627, 'kg mol^-1', 3.1e-13),\n",
       " 'proton-muon mass ratio': (8.88024337, '', 2e-07),\n",
       " 'proton-neutron mag. mom. ratio': (-1.45989805, '', 3.4e-07),\n",
       " 'proton-neutron mass ratio': (0.99862347812, '', 4.9e-10),\n",
       " 'proton rms charge radius': (8.414e-16, 'm', 1.9e-18),\n",
       " 'proton-tau mass ratio': (0.528051, '', 3.6e-05),\n",
       " 'quantum of circulation': (0.00036369475516, 'm^2 s^-1', 1.1e-13),\n",
       " 'quantum of circulation times 2': (0.00072738951032, 'm^2 s^-1', 2.2e-13),\n",
       " 'Rydberg constant': (10973731.56816, 'm^-1', 2.1e-05),\n",
       " 'Rydberg constant times c in Hz': (3289841960250800.0, 'Hz', 6400.0),\n",
       " 'Rydberg constant times hc in eV': (13.605693122994, 'eV', 2.6e-11),\n",
       " 'Rydberg constant times hc in J': (2.1798723611035e-18, 'J', 4.2e-30),\n",
       " 'Sackur-Tetrode constant (1 K, 100 kPa)': (-1.15170753706, '', 4.5e-10),\n",
       " 'Sackur-Tetrode constant (1 K, 101.325 kPa)': (-1.16487052358, '', 4.5e-10),\n",
       " 'second radiation constant': (0.01438776877, 'm K', 0.0),\n",
       " 'shielded helion gyromag. ratio': (203789456.9, 's^-1 T^-1', 2.4),\n",
       " 'shielded helion gyromag. ratio over 2 pi': (32.43409966,\n",
       "  'MHz T^-1',\n",
       "  4.3e-07),\n",
       " 'shielded helion mag. mom.': (-1.07455309e-26, 'J T^-1', 1.3e-34),\n",
       " 'shielded helion mag. mom. to Bohr magneton ratio': (-0.001158671471,\n",
       "  '',\n",
       "  1.4e-11),\n",
       " 'shielded helion mag. mom. to nuclear magneton ratio': (-2.127497719,\n",
       "  '',\n",
       "  2.5e-08),\n",
       " 'shielded helion to proton mag. mom. ratio': (-0.7617665618, '', 8.9e-09),\n",
       " 'shielded helion to shielded proton mag. mom. ratio': (-0.7617861313,\n",
       "  '',\n",
       "  3.3e-09),\n",
       " 'shielded proton gyromag. ratio': (267515315.1, 's^-1 T^-1', 2.9),\n",
       " 'shielded proton gyromag. ratio over 2 pi': (42.57638507,\n",
       "  'MHz T^-1',\n",
       "  5.3e-07),\n",
       " 'shielded proton mag. mom.': (1.41057056e-26, 'J T^-1', 1.5e-34),\n",
       " 'shielded proton mag. mom. to Bohr magneton ratio': (0.001520993128,\n",
       "  '',\n",
       "  1.7e-11),\n",
       " 'shielded proton mag. mom. to nuclear magneton ratio': (2.792775599,\n",
       "  '',\n",
       "  3e-08),\n",
       " 'speed of light in vacuum': (299792458.0, 'm s^-1', 0.0),\n",
       " 'standard acceleration of gravity': (9.80665, 'm s^-2', 0.0),\n",
       " 'standard atmosphere': (101325.0, 'Pa', 0.0),\n",
       " 'Stefan-Boltzmann constant': (5.670374419e-08, 'W m^-2 K^-4', 0.0),\n",
       " 'tau Compton wavelength': (6.97771e-16, 'm', 4.7e-20),\n",
       " 'tau Compton wavelength over 2 pi': (1.11056e-16, 'm', 1e-20),\n",
       " 'tau-electron mass ratio': (3477.23, '', 0.23),\n",
       " 'tau mass': (3.16754e-27, 'kg', 2.1e-31),\n",
       " 'tau mass energy equivalent': (2.84684e-10, 'J', 1.9e-14),\n",
       " 'tau mass energy equivalent in MeV': (1776.82, 'MeV', 0.16),\n",
       " 'tau mass in u': (1.90754, 'u', 0.00013),\n",
       " 'tau molar mass': (0.00190754, 'kg mol^-1', 1.3e-07),\n",
       " 'tau-muon mass ratio': (16.817, '', 0.0011),\n",
       " 'tau-neutron mass ratio': (1.89115, '', 0.00013),\n",
       " 'tau-proton mass ratio': (1.89376, '', 0.00013),\n",
       " 'Thomson cross section': (6.6524587321e-29, 'm^2', 6e-38),\n",
       " 'triton-electron mag. mom. ratio': (-0.001620514423, '', 2.1e-11),\n",
       " 'triton-electron mass ratio': (5496.92153573, '', 2.7e-07),\n",
       " 'triton g factor': (5.957924931, '', 1.2e-08),\n",
       " 'triton mag. mom.': (1.5046095202e-26, 'J T^-1', 3e-35),\n",
       " 'triton mag. mom. to Bohr magneton ratio': (0.0016223936651, '', 3.2e-12),\n",
       " 'triton mag. mom. to nuclear magneton ratio': (2.9789624656, '', 5.9e-09),\n",
       " 'triton mass': (5.0073567446e-27, 'kg', 1.5e-36),\n",
       " 'triton mass energy equivalent': (4.500387806e-10, 'J', 1.4e-19),\n",
       " 'triton mass energy equivalent in MeV': (2808.92113298, 'MeV', 8.5e-07),\n",
       " 'triton mass in u': (3.01550071621, 'u', 1.2e-10),\n",
       " 'triton molar mass': (0.00301550071517, 'kg mol^-1', 9.2e-13),\n",
       " 'triton-neutron mag. mom. ratio': (-1.55718553, '', 3.7e-07),\n",
       " 'triton-proton mag. mom. ratio': (1.066639908, '', 1e-08),\n",
       " 'triton-proton mass ratio': (2.99371703414, '', 1.5e-10),\n",
       " 'unified atomic mass unit': (1.6605390666e-27, 'kg', 5e-37),\n",
       " 'von Klitzing constant': (25812.80745, 'ohm', 0.0),\n",
       " 'weak mixing angle': (0.2229, '', 0.0003),\n",
       " 'Wien frequency displacement law constant': (58789257570.0, 'Hz K^-1', 0.0),\n",
       " 'Wien wavelength displacement law constant': (0.002897771955, 'm K', 0.0),\n",
       " 'atomic unit of mom.um': (1.992851882e-24, 'kg m s^-1', 2.4e-32),\n",
       " 'electron-helion mass ratio': (0.0001819543074573, '', 7.9e-15),\n",
       " 'electron-triton mass ratio': (0.0001819200062251, '', 9e-15),\n",
       " 'helion g factor': (-4.255250615, '', 5e-08),\n",
       " 'helion mag. mom.': (-1.074617532e-26, 'J T^-1', 1.3e-34),\n",
       " 'helion mag. mom. to Bohr magneton ratio': (-0.001158740958, '', 1.4e-11),\n",
       " 'helion mag. mom. to nuclear magneton ratio': (-2.127625307, '', 2.5e-08),\n",
       " 'Loschmidt constant (273.15 K, 100 kPa)': (2.651645804e+25, 'm^-3', 0.0),\n",
       " 'natural unit of mom.um': (2.730924488e-22, 'kg m s^-1', 3.4e-30),\n",
       " 'natural unit of mom.um in MeV/c': (0.5109989461, 'MeV/c', 3.1e-09),\n",
       " 'neutron-proton mass difference': (2.30557435e-30, 'kg', 8.2e-37),\n",
       " 'neutron-proton mass difference energy equivalent': (2.07214689e-13,\n",
       "  'J',\n",
       "  7.4e-20),\n",
       " 'neutron-proton mass difference energy equivalent in MeV': (1.29333236,\n",
       "  'MeV',\n",
       "  4.6e-07),\n",
       " 'neutron-proton mass difference in u': (0.00138844933, 'u', 4.9e-10),\n",
       " 'standard-state pressure': (100000.0, 'Pa', 0.0),\n",
       " 'alpha particle relative atomic mass': (4.001506179127, '', 6.3e-11),\n",
       " 'Bohr magneton in inverse meter per tesla': (46.686447783,\n",
       "  'm^-1 T^-1',\n",
       "  1.4e-08),\n",
       " 'Boltzmann constant in inverse meter per kelvin': (69.50348004,\n",
       "  'm^-1 K^-1',\n",
       "  0.0),\n",
       " 'conventional value of ampere-90': (1.00000008887, 'A', 0.0),\n",
       " 'conventional value of coulomb-90': (1.00000008887, 'C', 0.0),\n",
       " 'conventional value of farad-90': (0.9999999822, 'F', 0.0),\n",
       " 'conventional value of henry-90': (1.00000001779, 'H', 0.0),\n",
       " 'conventional value of ohm-90': (1.00000001779, 'ohm', 0.0),\n",
       " 'conventional value of volt-90': (1.00000010666, 'V', 0.0),\n",
       " 'conventional value of watt-90': (1.00000019553, 'W', 0.0),\n",
       " 'deuteron relative atomic mass': (2.013553212745, '', 4e-11),\n",
       " 'electron gyromag. ratio in MHz/T': (28024.9514242, 'MHz T^-1', 8.5e-06),\n",
       " 'electron relative atomic mass': (0.000548579909065, '', 1.6e-14),\n",
       " 'elementary charge over h-bar': (1519267447000000.0, 'A J^-1', 0.0),\n",
       " 'helion relative atomic mass': (3.014932247175, '', 9.7e-11),\n",
       " 'helion shielding shift': (5.996743e-05, '', 1e-10),\n",
       " 'hyperfine transition frequency of Cs-133': (9192631770.0, 'Hz', 0.0),\n",
       " 'lattice spacing of ideal Si (220)': (1.920155716e-10, 'm', 3.2e-18),\n",
       " 'luminous efficacy': (683.0, 'lm W^-1', 0.0),\n",
       " 'neutron gyromag. ratio in MHz/T': (29.1646931, 'MHz T^-1', 6.9e-06),\n",
       " 'neutron relative atomic mass': (1.00866491595, '', 4.9e-10),\n",
       " 'nuclear magneton in inverse meter per tesla': (0.0254262341353,\n",
       "  'm^-1 T^-1',\n",
       "  7.8e-12),\n",
       " 'Planck constant in eV/Hz': (4.135667696e-15, 'eV Hz^-1', 0.0),\n",
       " 'proton gyromag. ratio in MHz/T': (42.577478518, 'MHz T^-1', 1.8e-08),\n",
       " 'proton relative atomic mass': (1.007276466621, '', 5.3e-11),\n",
       " 'reduced Compton wavelength': (3.8615926796e-13, 'm', 1.2e-22),\n",
       " 'reduced muon Compton wavelength': (1.867594306e-15, 'm', 4.2e-23),\n",
       " 'reduced neutron Compton wavelength': (2.1001941552e-16, 'm', 1.2e-25),\n",
       " 'reduced Planck constant': (1.054571817e-34, 'J s', 0.0),\n",
       " 'reduced Planck constant in eV s': (6.582119569e-16, 'eV s', 0.0),\n",
       " 'reduced Planck constant times c in MeV fm': (197.3269804, 'MeV fm', 0.0),\n",
       " 'reduced proton Compton wavelength': (2.10308910336e-16, 'm', 6.4e-26),\n",
       " 'reduced tau Compton wavelength': (1.110538e-16, 'm', 7.5e-21),\n",
       " 'shielded helion gyromag. ratio in MHz/T': (32.43409942, 'MHz T^-1', 3.8e-07),\n",
       " 'shielded proton gyromag. ratio in MHz/T': (42.57638474, 'MHz T^-1', 4.6e-07),\n",
       " 'shielding difference of d and p in HD': (2.02e-08, '', 2e-11),\n",
       " 'shielding difference of t and p in HT': (2.414e-08, '', 2e-11),\n",
       " 'tau energy equivalent': (1776.86, 'MeV', 0.12),\n",
       " 'triton relative atomic mass': (3.01550071621, '', 1.2e-10),\n",
       " 'triton to proton mag. mom. ratio': (1.0666399191, '', 2.1e-09),\n",
       " 'vacuum electric permittivity': (8.8541878128e-12, 'F m^-1', 1.3e-21),\n",
       " 'vacuum mag. permeability': (1.25663706212e-06, 'N A^-2', 1.9e-16),\n",
       " 'W to Z mass ratio': (0.88153, '', 0.00017)}"
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "const.physical_constants"
   ]
  }
 ],
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